WATER-DILUTING POLYMER COMPOSITION FOR COATINGS Russian patent published in 2013 - IPC C25D9/02 C09D163/00 C09D175/04 

FIELD: metallurgy.

SUBSTANCE: water-diluting polymer composition for coatings includes epoxyamine resin, polyurethane hardener, modifying additive and deionised water; at that, as polyurethane hardener, there used is polyurethane containing 1.3-14.9 % of carbamide groups, 15.0-30.7 % of urethane groups, 0.33-1.80 % of biuretic groups, and as modifying additive there used is 2-mercaptobenzothiazole or 2-phenyl-4-chromenone, or 2,3-benzopyridine, or hexamethylenetetramine at the following component ratio, wt %: epoxyamine resin 5.8-8.8; polyurethane hardener 5.2-7.8; modifying additive 1.0-3.0; deionised water is the rest.

EFFECT: obtaining coatings with low moisture absorption, adhesion that is stable in water, stable physic and mechanical properties at thermal ageing, which are capable of being hardened at high speeds.

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